Effect of processing conditions and material properties on the debond fracture toughness of foam-core sandwich composites: experimental optimization

2003 ◽  
Vol 34 (11) ◽  
pp. 1097-1104 ◽  
Author(s):  
Prasun Majumdar ◽  
Deepak Srinivasagupta ◽  
Hassan Mahfuz ◽  
Babu Joseph ◽  
Matthew M. Thomas ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Material Properties ◽  
Foam Core ◽  
Processing Conditions ◽  
Sandwich Composites ◽  
Experimental Optimization

The role of gas flow distributions on CO2 mineralization within monolithic cemented composites: coupled CFD-factorial design approach

2021 ◽  
Author(s):  
Iman Mehdipour ◽  
Gabriel Falzone ◽  
Dale Prentice ◽  
Narayanan Neithalath ◽  
Dante Simonetti ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Factorial Design ◽  
Material Properties ◽  
Gas Flow ◽  
Design Approach ◽  
Processing Conditions ◽  
Gas Processing ◽  
Co2 Mineralization

Optimizing the spatial distribution of contacting gas and the gas processing conditions enhances CO2 mineralization reactions and material properties of carbonate-cementitious monoliths.

Effect of Microballoon Radius Ratio on Syntactic Foam Core Sandwich Composites

2005 ◽  
Vol 7 (2) ◽  
pp. 95-111 ◽  
Author(s):  
Eyassu Woldesenbet ◽  
Nikhil Gupta ◽  
H. Dwayne Jerro
Keyword(s):  
Syntactic Foam ◽  
Radius Ratio ◽  
Foam Core ◽  
Sandwich Composites

Simplified LBB Guidance: Stage 1 — Development of a New Software Tool and Initial Scoping Calculations

2018 ◽  
Author(s):  
Peter Gill ◽  
John Sharples ◽  
Chris Aird
Keyword(s):  
Fracture Toughness ◽  
Material Properties ◽  
Software Tool ◽  
Pipe Material ◽  
Loading Conditions ◽  
Design Rules ◽  
Inner Radius ◽  
Inner Diameter ◽  
Stage 1 ◽  
Leak Before Break

This study is focussed on establishing more simplified Leak-before-Break (LbB) guidance for inclusion into Section III.11 of the R6 procedure. The approach adopted has involved the development of a universal software tool for LbB simplified assessments which can be used to perform initial scoping calculations to demonstrate typical LbB cases. It is envisaged that this simplified methodology will enable plant assessment engineers to be more informed on which sites on plant are likely to have LbB successfully applied and to be able to undertake LbB assessments in a more simplistic way than is currently available. Using the developed software tool, a range of LbB calculations for different cracks and loading conditions have been performed to provide guidance on where LbB is more likely to be applied on plant. Loading conditions include primary and secondary stresses, where through-wall changes have been accounted for. The pipe geometries included in this study have been defined by the inner radius and the wall thickness, calculated by minimum pipe thickness required according to meet the design rules of ASME III. The pipe inner radius varies from 40mm to 200mm (80mm to 400mm inner diameter (ID)). All pipe outer diameters are less than 0.5m. All cracks considered in this study are through-wall and circumferential. Pipe material properties are chosen to be broadly representative of an Austenitic Stainless Steel, where the fracture toughness varies from 100 to 180MPa√m and the yield stress is 150MPa.

Influence of hygrothermal conditioning on strength and stiffness of rigid foam core glass/epoxy skin sandwich composites

2017 ◽  
Vol 4 (8) ◽  
pp. 9246-9255
Author(s):  
D. Vishnu Vardhan Reddy ◽  
M. Ramya ◽  
E. Suresh ◽  
K. Padmanabhan
Keyword(s):  
Foam Core ◽  
Sandwich Composites ◽  
Rigid Foam ◽  
Strength And Stiffness ◽  
Hygrothermal Conditioning

Low Velocity and High Strain Rate Impact of Pin Reinforced Foam Core Sandwich Composites

2019 ◽  
pp. 721-729 ◽  
Author(s):  
U. K. Vaidya ◽  
P. Kumar ◽  
M. V. Hosur ◽  
M. V. Kamath ◽  
H. Mahfuz ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Foam Core ◽  
Sandwich Composites ◽  
Low Velocity

Powder Metallurgy Aluminum Alloys: Structure and Porosity

2019 ◽  
Author(s):  
Will Judge ◽  
Georges Kipouros
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Material Properties ◽  
Cost Effective ◽  
High Reactivity ◽  
Commercial Production ◽  
Processing Conditions ◽  
Near Net Shape ◽  
And Performance ◽  
Production Conditions

The production of aluminum alloys through powder metallurgy (PM) processes allows for the manufacture of net- or near-net-shape components in a cost-effective and sustainable manner. The high reactivity of aluminum metal, however, complicates PM processing, and special attention must be given to certain steps during production, particularly sintering. PM processing conditions strongly affect the structure and porosity of aluminum PM alloys, which ultimately determine their material properties and performance. In this article, the fundamental aspects of the commercial production of aluminum PM alloys are presented, along with the effects of production conditions on the structure and porosity of aluminum PM alloys. The properties and performance of aluminum PM alloys are then analyzed and interpreted with respect to their structure and porosity.

scholarly journals Low temperature mixed-mode debond fracture and fatigue characterisation of foam core sandwich

2018 ◽  
Vol 22 (4) ◽  
pp. 1039-1054 ◽  
Author(s):  
Arash Farshidi ◽  
Christian Berggreen ◽  
Leif A Carlsson
Keyword(s):  
Fracture Toughness ◽  
Growth Rate ◽  
Low Temperature ◽  
Mixed Mode ◽  
Room Temperature ◽  
Sliding Mode ◽  
Fatigue Tests ◽  
Mode I ◽  
Foam Core ◽  
Climatic Chamber

This paper experimentally investigates the effects of low temperature on fracture toughness and fatigue debond growth rate in foam core sandwich composites. Mixed-mode bending specimens were statically and cyclically tested inside a climatic chamber at a low temperature (−20°C) and at room temperature (23°C) as a reference. Testing was conducted in mode I (opening) and mixed-mode I/II (opening-sliding) mode mixities. The fatigue tests results are presented according to the modified Paris–Erdogan relation. Results showed substantial fracture toughness reduction due to low temperature. Low temperature furthermore elevated the cyclic crack growth rate.

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